公开(公告)号：US20180294389A1

公开(公告)日：2018-10-11

申请号：US15483096

申请日：2017-04-10

Applicant: Cree, Inc.

Inventor： Eric Tarsa ,  Kurt Wilcox ,  Bin Hou ,  Ted Lowes

IPC: H01L33/58 ,  F21V7/00 ,  F21V5/04 ,  F21V7/04 ,  F21V13/04 ,  H01L25/075 ,  H01L33/60

CPC classification number: H01L33/58 ,  F21V5/007 ,  F21V5/045 ,  F21V7/0091 ,  F21Y2115/10 ,  G02B19/0028 ,  G02B19/0061 ,  G02B19/0066 ,  G02B19/0071 ,  H01L25/0753

Abstract: A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region are formed by pairs of transverse surfaces each surface of which redirects the received light.

公开(公告)号：US10468566B2

公开(公告)日：2019-11-05

申请号：US15483096

申请日：2017-04-10

Applicant: Cree, Inc.

Inventor： Eric Tarsa ,  Kurt Wilcox ,  Bin Hou ,  Ted Lowes

IPC: H01L33/58 ,  F21V7/00 ,  F21V5/04 ,  F21V5/00 ,  G02B19/00 ,  H01L25/075 ,  F21Y115/10

Abstract: A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region is formed by pairs of transverse surfaces each surface of which redirects the received light.